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leaking problem with new Vitamix 750 64 oz. container

Here's an update: I waited a month to get a substantive reply from Vitamix, but heard nothing -- essentially, they were stonewalling me. So I contacted the CPSC, which is the Federal Agency that handles the recall, and explained the situation. I then wrote this: "I know this is not a safety issue per se, but when a company replaces a product as a result of the recall, aren't they required to ensure that the replacement product provides the same level of functionality to the consumer as the one they replaced? In this case, it doesn't. " CPSC then contacted Vitamix. Vitamix still didn't give a substantive reply, but a few weeks later they shipped out yet another container. Unfortunately, Vitamix seems to lack the competence to follow basic instructions, and thus shipped it to the wrong address (I'd previously told them that I, and my Vitamix, were temporarily not at my home address, and that any updated containers should thus not be shipped to my home address; they ignored this). I should return home soon, at which point I will let you know if the new container works any better.

Mar 27, 2014
theorist in Cookware

leaking problem with new Vitamix 750 64 oz. container

The old containers will work on the new base, but I understand the blending performance they give on the new base won't be as good as that on the old base. That's because, to address the higher torque the larger blades in the new container required, they down-geared the machine, giving it more torque but lower max RPMs. The is also why the old bases can't handle the new containers -- they don't have enough torque for the longer lever arm created by the longer blades.

And in any case I prefer the lower profile container. I will keep you posted on what happens

Feb 17, 2014
theorist in Cookware

leaking problem with new Vitamix 750 64 oz. container

Thanks for posting that video! It shows exactly what I experience on mine -- the liquid gets past the flange right at the handle, and then spreads out from there. Hopefully with two separate customers experiencing the same thing, we can get Vitamix to take this more seriously. Vitamix had promised me a response within 48 hours, but that was nearly two weeks ago and I've not heard back from them (this is par for the course with Vitamix -- they're great when you talk to them on the phone, but they typically never do the promised follow-up). I've contacted them again.

I should add that, with a container filled to the 64 oz. mark with smoothie mix, to avoid having a huge mess I now need to wrap a paper towel around the lid and also keep it pressed down onto the container during blending. This is not the performance that I paid for when I bought the machine.

Feb 17, 2014
theorist in Cookware

leaking problem with new Vitamix 750 64 oz. container

This might help illustrate the problem more clearly. Here's a picture showing how liquid easily passes by the flange at the point of handle attachment (shown at right in picture). It can also be seen that, away from the handle, the flange is able to block the liquid. I used soapy water here for clarity, but the same can be seen with a conventional smoothie mix.

Feb 08, 2014
theorist in Cookware

leaking problem with new Vitamix 750 64 oz. container

Here's a close-up from one of the containers.

Feb 05, 2014
theorist in Cookware

leaking problem with new Vitamix 750 64 oz. container

Thanks for the info. on how to determine the mfr. date. I'm familiar with that format -- they use it on ski bindings -- but didn't know it was present on the Vitamix containers. Both of the ones I now have at home were manufactured Nov. 2013.

BTW, it's really hard to read the last digit indicating the year -- I found it wasn't possible to tell whether it was a "2" or "3" with the naked eye, since the container itself prevents you from getting your eyeball close enough to the bottom. I therefore wasn't certain of the date until I lowered my high-res webcam into the carafe.

Feb 05, 2014
theorist in Cookware

leaking problem with new Vitamix 750 64 oz. container

It's my understanding, from Vitamix, that the blade recall and the container redesign were independent, since the redesign involved only the handle. The recall was announced at the end of August 2013. The container redesign may have been more recent.

Feb 05, 2014
theorist in Cookware

leaking problem with new Vitamix 750 64 oz. container

No problem, artiek. I'm just generally frustrated with Vitamix. Prior to this, they shipped me three successive defective 750's. I decided to keep the last one, because this one was at least the best of the three, and I didn't want to risk sending it back and getting a fourth one that was worse. And note that they put both of the two replacements through an extra QC step that was supposed to ensure there were no problems. It simply boggles the mind that, in spite of this, they still ended up shipping me units with production defects that were visually obvious immediately upon opening the box. There's just something wrong going on there.

To their credit, Vitamix readily admitted the defects I pointed out were unacceptable, and they were wiling to keep shipping me units until they got it right. However, what they're not willing to admit is the fact that, even with three tries, they couldn't ship me a non-defective unit, means there is an underlying problem with their system.

That was over a year ago, and I would not have had any further contact with Vitamix except that I had to return the container because of the recall. So I feel like I'm going down the rabbit hole with them all over again.

Feb 05, 2014
theorist in Cookware

leaking problem with new Vitamix 750 64 oz. container

hardline, thanks for your post. Vitamix told me the container they sent me is of a new design -- they said they changed the attachment of the handle to the carafe to improve the balance. So, unfortunately, unless you know that your container is also of the new design, it's not possible to draw to draw a conclusion from your observation -- it may simply be that you have the older container. My old container, which was of the original low-profile design that shipped with the 750, did not have the depression, and thus did not leak (at least it didn't leak once they replaced the defective lid they sent me).

[Of course, if the information Vitamix gave me -- that these containers are of a new design -- is incorrect, then one could conclude directly that this is a problem specific to this production run.]

Feb 05, 2014
theorist in Cookware

leaking problem with new Vitamix 750 64 oz. container

Artiek:

From my original post:

"it does not appear to be a manufacturing defect in the container — they just sent me a second container and lid, which has the same issue"

And from my previous post:
"The customer service guy I spoke with acknowledged there is a depression" [in the container he has on hand at Vitamix]

Bottom line: I have seen this depression (and experienced the attendant leaking) with two of the new containers, and Vitamix customer service finds the same depression in the container they have. So either it's a design flaw, or a problem with an entire production run. In either case, it would appear that just having them send a third container isn't going to help.

Feb 04, 2014
theorist in Cookware

leaking problem with new Vitamix 750 64 oz. container

Here's a pic; the depression goes from the tip of the left arrow to the tip of the right arrow.

Feb 04, 2014
theorist in Cookware

leaking problem with new Vitamix 750 64 oz. container

Also, I should add a correction: the lid doesn’t have a double flange — it has a flange plus a lip. The flange is at the level where the depression is, and once liquid gets past that, the lip is not sufficient to maintain a seal.

I contacted Vitamix customer service and asked them to escalate this, but I have no idea if anything will happen. The customer service guy I spoke with acknowledged there is a depression, but said it’s not an issue because the seal is good enough anyways, which is clearly not the case.

It's like pulling teeth getting them to acknowledge that having a valley on the inner lip of a container, through which liquid can leak, is not a good idea.

Feb 04, 2014
theorist in Cookware

leaking problem with new Vitamix 750 64 oz. container

Thanks for your reply, artiek. I can tell you that I can clearly feel the depression on both containers. In addition, when blending, I can clearly see the liquid enter the space between the two flanges right where the depression is located. And I'm experiencing this both with my old lid, which gave a good seal with my old container, as well as with the new lid. Hence I conclude it's not the lid, it's the containers.

However, given that you don't feel a depression in yours, maybe this is a manufacturing defect, rather than a design defect (both of my new containers could be from the same production run). Vitamix certainly has a history of production defects and poor quality control -- it took me three Vitamix 750's before I got one that was decent, and even it has production defects. [Vitamix customer service agrees these are defects -- I sent them a video of my current machine to show how loose the toggle switch is; they've offered to replace it with a fourth machine but, given their history, I am concerned that I would get one that's even worse than the one I have, so I've decided to stick with it; this is very disappointing for what is probably the world's most expensive home blender.]

Feb 04, 2014
theorist in Cookware
1

leaking problem with new Vitamix 750 64 oz. container

The blades on my Vitamix 750 were covered by the recall. I sent my old container back and, instead of just replacing the blades, Vitamix sent me a new container, which has a new design. While this was nice of them, this new design has a bad leaking problem (it does not appear to be a manufacturing defect in the container — they just sent me a second container and lid, which has the same issue):

The lid relies on a double flange to create a seal. Unfortunately, at the point where the handle attaches to the container, there is a depression in the container's plastic, on the inside, just below the lip. As a result of this depression, liquid can quickly pass by the lower flange, leaving only the upper one as a seal. In addition, the depression slightly extends to the lip, allowing the liquid that has passed by the lower flange to penetrate the upper one.

This makes absolutely no sense to me — how can Vitamix not understand that you can’t seal a non-round container with a round lid? Frankly, it boggles the mind that Vitamix could have made such an obvious engineering error in the design of their new container.

Has anyone had a similar experience?

Feb 03, 2014
theorist in Cookware

aeration from Vitamix vs. Blendtec?

I've since found that I can improve the results with the Vitamix 750 by blending manually instead of with the presets. What I do (similar to what seek6 suggested) is blend for a while a slower speed until the contents are throughly mixed. At this point, the individual ingredients are evenly distributed throughout the mixture, but still a bit chunky. Then I give it just enough time at high speed to smooth out the mixture. I haven't yet experimented systematically with the slow-high-slow that seek6 suggested -- that's next on the list.

Nov 18, 2012
theorist in Cookware

aeration from Vitamix vs. Blendtec?

Has anyone that owns both of these compared the extent to which they aerate food? I just got the Vitamix 750, and while it works great, I find that when I make thick soups and smoothies, the mixtures end up seeming like they have a lot of air in them. Essentially, they appear to be dense, stable foams where the air bubbles are too small to see (like whipped cream, for instance, except with not quite that much air). My Vitamix does appear to aerate more than my Braun MX2050. I'm therefore wondering if this aeration is an unavoidable consequence of high-speed blending (in which case the Blendtec's results would be comparable), or if the Blendtec's different design might aerate food less (the blending action of the Blendtec does appear to be somewhat different from the Vitamix's).

For instance, here's a soup I made last night: ~10 raw Brussel sprouts, ~10 raw frozen baby carrots, ~1 cup water, 1.5 tbsp half-and-half, 5 peppercorns, dash of salt. Blend until well-mixed (ramped up to max, kept it there for ~60 seconds). Granted, the presence of the cream would tend to cause foaming. I suppose I could have left it out and added it at the end at slow speed (maybe I'll try that next time). Likewise my smoothies have a little olive and coconut oil.

Oct 14, 2012
theorist in Cookware

Alternative to Vitamix blender

I wouldn't recommend using the frictional heating of the Vitamix to make soup. While the Tritan copolyester compound is BPA-free, it has a relatively low glass transition temperature (110C), and exposing it to boiling water could cause some leaching (it is plastic, after all). Likely whatever does come out is at low concentrations and of little hazard, but I don't like drinking any plastic at all. Thus I run my Vitamix just long enough to get the soup to the right consistency, then pour it in a bowl and finish the heating in the microwave. [One way to test this would be to blend clean water using the standard soup preparation guidelines, pour it into a drinking glass, allow it to cool, and see if there is any plastic taste.]

Oct 13, 2012
theorist in Cookware

Alternative to Vitamix blender

I agree -- people tend to greatly underestimate how much damage regular exposure to loud noise can do to hearing. Much of the age-associated decrease in high-frequency hearing in modern cultures is likely environmental, as evidenced by the excellent hearing measured in the elderly of non-technological societies. And blenders, particularly the high-powered ones (I have a Vitamix 750) are damn loud. Therefore, I keep a pair of protective earmuffs hanging in my kitchen, which I slip on whenever I run the blender (much easier to put on and off, and more hygenic in a kitchen environment, than earplugs): http://www.amazon.com/gp/product/B000...

Oct 13, 2012
theorist in Cookware